Growing Green

By Robin Trott, Extension Educator

As we get ready for winter, there are still a few important tasks to help your yard and garden survive the cold months and thrive next spring. Here’s a quick checklist from Extension horticulture experts Julie Weisenhorn and Jon Trappe.

Remove buckthorn

November is the perfect time to remove common buckthorn, an invasive plant that holds its green leaves later than most other plants. Its late-season greenery makes it easy to spot and pull out before it spreads further in your landscape.

Protect trees and shrubs from wildlife

During winter, animals like deer, rabbits, and voles may nibble on trees and shrubs due to limited food options. Protect young trees by installing fencing or barriers to keep these critters away. Deer can damage branches or bark, while smaller animals often chew on thin bark at the base.

Keep watering until the ground freezes

If the weather is dry, continue watering trees and shrubs until the soil freezes. Moist soil insulates roots, helping plants manage winter stress. Add a few inches of wood mulch around the base to further protect roots, conserve moisture, and moderate soil temperatures.

Cover strawberries and tender perennials

Cover strawberry plants with 2-3 inches of mulch (like leaves or straw) before temperatures dip below 20°F. This insulation helps them survive the cold. For strawberries in containers, consider burying the pots in the ground and adding mulch on top, or pile soil around the pot base and cover with mulch.

Mow and mulch leaves

Mulch fallen leaves with your lawn mower to return nutrients to the soil and provide shelter for beneficial insects. Mow in different directions to break down leaves thoroughly. Aim for a lawn height of 2.0-2.5 inches to prevent snow mold over winter. Avoid leaving too many leaves, as they can smother grass and lead to winter stress.

Skip fertilizing and lawn treatments

It’s too late in the season for fertilizing, aerating, or dethatching. Applying treatments now can stress your lawn before winter.

Control persistent weeds

Late fall is a great time to tackle stubborn weeds like creeping Charlie. Cooler temperatures make these weeds easier to control, with minimal impact on beneficial insects.

Winterize your irrigation system

Clear out any water left in your irrigation lines to avoid winter damage. Frozen water can crack pipes and damage equipment. If you’re unsure of the process, consider hiring a professional to winterize your system.

By following these simple November gardening tasks, you can help your yard and garden get through winter and come back healthier in spring.

For more information, contact University of Minnesota Extension or visit our website at extension.umn.edu.

Until next time, happy gardening!

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“Autumn… the year’s last, loveliest smile.”  ~William Cullen Bryant